Synthesis of polyamic acid

C - Chemistry – Metallurgy – 08 – G

Patent

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402/238, 260/509

C08G 73/10 (2006.01)

Patent

CA 1141777

Abstract of the Disclosure Polyamic acid having greatly increased adhesive ability is prepared by compacting a solid aromatic dianhydride to reduct its surface area to weight ratio and reacting the compacted dianhydride with a solution of an organic diamine in an inert non-aqueous solvent.

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